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    Question

    Sharman is 20 percent less efficient than Vivek. If

    Vivek can make a helmet alone in 20 days, then in how many days can Sharman alone make the same helmet?
    A 27 days Correct Answer Incorrect Answer
    B 30 days Correct Answer Incorrect Answer
    C 25 days Correct Answer Incorrect Answer
    D 23 days Correct Answer Incorrect Answer

    Solution

    ATQ, Per day efficiency of Vivek for making the helmet = 1/20 ⇒ Sharman's per day efficiency for making the helmet = (80/100) × (1/20) = 0.8 × (1/20) = 1/25 ∴ Sharman can make the helmet in 25 days.

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